FR2308918B3 - - Google Patents

Info

Publication number
FR2308918B3
FR2308918B3 FR7611761A FR7611761A FR2308918B3 FR 2308918 B3 FR2308918 B3 FR 2308918B3 FR 7611761 A FR7611761 A FR 7611761A FR 7611761 A FR7611761 A FR 7611761A FR 2308918 B3 FR2308918 B3 FR 2308918B3
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR7611761A
Other languages
French (fr)
Other versions
FR2308918A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Allied Corp
Original Assignee
Allied Chemical and Dye Corp
Allied Chemical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Allied Chemical and Dye Corp, Allied Chemical Corp filed Critical Allied Chemical and Dye Corp
Publication of FR2308918A1 publication Critical patent/FR2308918A1/en
Application granted granted Critical
Publication of FR2308918B3 publication Critical patent/FR2308918B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/1062—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using a controlled passive interferometer, e.g. a Fabry-Perot etalon
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/44—Raman spectrometry; Scattering spectrometry ; Fluorescence spectrometry
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  by interference

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
FR7611761A 1975-04-21 1976-04-21 METHOD AND APPARATUS FOR SPECTROSCOPIC GAS ANALYSIS Granted FR2308918A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/569,894 US4011013A (en) 1975-04-21 1975-04-21 Multifrequency excitation of gas rotational spectra

Publications (2)

Publication Number Publication Date
FR2308918A1 FR2308918A1 (en) 1976-11-19
FR2308918B3 true FR2308918B3 (en) 1979-01-12

Family

ID=24277331

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7611761A Granted FR2308918A1 (en) 1975-04-21 1976-04-21 METHOD AND APPARATUS FOR SPECTROSCOPIC GAS ANALYSIS

Country Status (6)

Country Link
US (1) US4011013A (en)
JP (1) JPS51129289A (en)
CA (1) CA1058416A (en)
DE (1) DE2617258A1 (en)
FR (1) FR2308918A1 (en)
GB (1) GB1523224A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181830B (en) * 1985-10-18 1990-02-07 Central Electr Generat Board Temperature measurement
US5133602A (en) * 1991-04-08 1992-07-28 International Business Machines Corporation Particle path determination system
US5896197A (en) * 1992-01-08 1999-04-20 Nicolet Instrument Corporation Interferometer having glass graphite bearing
US5498875A (en) * 1994-08-17 1996-03-12 Beckman Instruments, Inc. Signal processing for chemical analysis of samples
US20040145741A1 (en) * 2003-01-24 2004-07-29 Honeywell International Inc. Comb etalon fluid analyzer
KR100857456B1 (en) * 2006-12-07 2008-09-08 한국전자통신연구원 Method for determining optimal resonance length to maximize wave intensity in resonant structure
US8665442B2 (en) 2011-08-18 2014-03-04 Li-Cor, Inc. Cavity enhanced laser based isotopic gas analyzer
US9116047B2 (en) 2013-10-11 2015-08-25 Li-Cor, Inc. Systems and methods for controlling the optical path length between a laser and an optical cavity

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768908A (en) * 1971-01-04 1973-10-30 S Zaromb Remote sensing apparatus and methods
US3802777A (en) * 1972-04-19 1974-04-09 Onera (Off Nat Aerospatiale) Gas concentration measurement device using stimulated raman scattering
US3853404A (en) * 1972-08-14 1974-12-10 Allied Chem Simultaneous interferometric transmission of periodic spectral components

Also Published As

Publication number Publication date
DE2617258A1 (en) 1976-12-02
US4011013A (en) 1977-03-08
FR2308918A1 (en) 1976-11-19
JPS51129289A (en) 1976-11-10
CA1058416A (en) 1979-07-17
GB1523224A (en) 1978-08-31

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